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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A151685 a(n) = Sum_{k >= 0} bin2(wt(n+k),k+1), where bin2(i,j) = A013609(i,j), wt(i) = A000120(i).

Table of values

n a(n)
0 3
1 7
2 5
3 7
4 17
5 17
6 7
7 7
8 17
9 17
10 19
11 41
12 51
13 31
14 9
15 7
16 17
17 17
18 19
19 41
20 51
21 31
22 21
23 41
24 51
25 55
26 101
27 143
28 113
29 49
30 11
31 7
32 17
33 17
34 19
35 41
36 51
37 31
38 21
39 41
40 51
41 55
42 101
43 143
44 113
45 49
46 23
47 41
48 51
49 55
50 101
51 143
52 113
53 73
54 103
55 143
56 161
57 257
58 387
59 369
60 211
61 71
62 13
63 7
64 17
65 17
66 19
67 41
68 51

List of values

[3, 7, 5, 7, 17, 17, 7, 7, 17, 17, 19, 41, 51, 31, 9, 7, 17, 17, 19, 41, 51, 31, 21, 41, 51, 55, 101, 143, 113, 49, 11, 7, 17, 17, 19, 41, 51, 31, 21, 41, 51, 55, 101, 143, 113, 49, 23, 41, 51, 55, 101, 143, 113, 73, 103, 143, 161, 257, 387, 369, 211, 71, 13, 7, 17, 17, 19, 41, 51]

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